Radiator construction



Aug. 1, 1933. n. JAFFE 1,920,562

RADIATOR CONSTRUCTION Filed Aug. 8, 1950 L Slim-.mlb

111111111" 'mw Z1' Patented A-ug. 1, 1933 UNITED STATES RADIATOR CONSTRUCTION Harry Jaffe, Chicago, Ill., assignor to Johnston Tool & Die Co., Chicago, Ill., a Corporation of Illinois Application August 8, 1930.

3 Claims.

My invention relates to heat exchange devices and more particularly to radiators for automobiles and the like.

It is my belief that the great majority of the 5 common forms of automobile radiators now oiered to the trade are greatly ineicient due to imperfections in the structural design thereof. It is a well known fact that the greatest efciency in a radiator is dependent upon the radiating or cooling surface provided therein. This surface has been provided in a number of novel manners but generally the radiating surface over which the air is permitted to pass is much too little for the greatest efficiency. An important object of my invention is to pro- Vide an automobile radiator of the vertical tube type, which is the type that may be most cheaply constructed, and to increase the eiciency thereof by providing for greatly increased radiation. This is accomplished by very largely increasing the area of contact between the tubes and the metal composing the fins. In the common form of vertical tube radiator, the separator plates are flat strips having holes through which the tubes extend. Thus the area of contact and through which heat is transmitted by conduction to the plates is very small. In my construction I provide for a large area of Contact and consequently a rapid transfer of heat from the tubes to the thin, sinuous, radiating surfaces of the plates.

It is one of the'objects of my invention to provide a radiator having a very large area in contact with the water tubes for dissipation of the heat in the water.

A further object of my invention is to remove the same from the complexities commonly present in the honey-comb type of radiator. In effecting this change I have constructed a radiator of a very simple and inexpensive form.

A further object of my invention is to manufacture the same from a plurality of pre-formed separator plates which are adapted to contact the water tubes in the radiator. The vseparators contemplated in my invention are formed to provide not only the maximum area of Contact with the water tubes, but also the maximum radiating surface for dissipation of the heat transmitted through the tubes.

My invention will be more readily understood by reference to the accompanying drawing in which: l

Fig. 1 is a rear elevation showing a section of the radiating surface, constructed in accordance with my invention;

Fig. 2 is a side view of one of the two comple- Serial No. 473,796

mentary separator plates contemplated in one form of my invention;

Fig. 3 is an-end view of the separator plate shown taken on the line 3-3 of Fig. 2;

Fig. 4 is a fragmentary side elevation of the 30 separator plate shown in Fig. 2;

Fig. 5 is a front elevation of a portion of a radiator constructed in accordance with my invention;

Fig. 6 is a horizontal sectional view through 65 the radiator shown in Fig. 5 taken on lines 6--6 of Fig. 5;

Fig. 7 is a front elevation of another form of radiator construction, and

Fig. 8 is a horizontal sectional view taken on 7o the lines 8 8 of Fig. 7.

By reference to the drawing it will be seen that my radiator comprises the upper tank 10, side plates l1, lower tank l2, the inlet pipe 13 and outlet pipe 14 and the radiator core. The 75 radiator core comprises a plurality of vertically extending separator plates l5 best shown in Figs.

2 and 4, which contact vertical water tubes.

The separator plates 15 which compose the core and provide the radiating surfaces, are of duplicate form throughout, each separator plate in the entire radiator being formed identical to the adjacent plates and complementary thereto.

The separator plates 15 in edge elevation in Fig. 4 are shown to be of generally sinuous form, that is, the body of the plates comprises the alternate depressions B and ridges A of identical construction on two sides of a longitudinal center line.

The portion A constituting a ridge on one separator plate is adapted to cooperate with a similar complementary portion B on an adjacent interltting separator plate, the portion on the latter plate being considered as a depression, the depression B of the rst plate is opposite 95 the ridge A on the second, intertting plate and has no contact therewith. This explanation is pertinent where there are only two or a pair of plates in contact, and where'the two plates contact one or more tubes from front to rear as shown in Fig. 6. Where, as in a complete radiator core a large number of separator plates are joined to each other in side by side relation the ridge of the one is complementary to the depression of the adjacent plate, and the depression is complementary to the ridgev of -the adjacent plate. Neither the ridges nor the depressions are complementary or have contact with any other depression or ridge on their inside faces, the inside faces being opposite to the comple- 110 mentary portion on the adjacent plate. The word complementary as used herein is intended to mean only those parts which have contact.

The ridges and depressions of each separator plate are provided with one or more vertically extending registering grooves 16 therein and when two complementary plates are placed together the vertical grooves 16 serve to receive a tube 17, the entire length of said groove being in contact with the tube, thus providing a relatively large heat transfer surface. Adjacent to the vertical grooves 16 in the plates 15 I provide the lugs 18 and depressions 19 which are adapted to co-operate with simil complementary lugs and depressions on the a acent plate to insure the proper fitting thereof..

In the depressions of said plates I provide one or more vertically extending registering grooves 20 in a parallel line, which grooves are disposed inwardly of said depressions. These grooves 20 serve a double purpose, that of providing a snug t with the adjacent vertically extending tubes, and also to insure a baille for air passing through the opening provided by the depression, and around the tube therein.

To insure a sufficient' area of obstruction to the air passing through the openings and around the tubes I provide also on either one or both of the marginal edges of the separator plates 15, the continuous vertical deflections 21. This deiiection is continuous from top to bottom of the plates and, as best shown in Fig. 4, the deflection is caused to be presented inwardly at the depressions and outwardly at the ridges. Thus, when a radiator is fabricated, the `deflections 21 will serve as a baille for air passing through the openings, and in case of the ridges which are in contact with an adjacent depression, the vertical air passage thus formed provides for any possible convection currents that may be developed in the through passages.

In Figs. 5 and 7, I have shown two variations of radiator construction. In Fig. 5 the form illustrated is adapted to receive two tubes in each adjacent series, the space between a depression and parallel tubes being open for the purpose of air circulation and radiation. In the form shown in Fig. 7 the open space provided inthe construction in Fig. 5 is occupied by a tube 17a, thus insuring greater cooling surface.

Obviously the construction of any desired Wi th of radiator is possible by merely increasing he width of the separator plates constituting a radiator core, in which case a greater number of tubes from front to rear would be permissible and greater radiating surface provided.

As best shown in Figs. 3 and 4 the extremities of the separator plates are bent at an angle to provide a face 22 which is adapted to contact a similar portion on an adjacent complementary plate. Thus, a plurality of separator plates can be assembled with the tubes placed therein and by placing the entire assembly in a suitable frame, the complete core may be fabricated by merely soldering or welding each of the contacting joints formed by the complementary, bent portions 22.

In the above specification it is understood that the term ridge and depression is used to indicate such portions of the individual separator plates, it being understood that where the two complementary plates are joined the depression on one plate will co-operate with the ridge on the adjacent plate and the ridge of one plate will cooperate withthe depression on the adjacent plate,

thus providing a series of vertical openings for air passage around the vertical water pipes.

vIn order to insure greater efficiency in the open air passages. I have formed the leading edges 23 of the depressions of greater width than the leading edges 24 of the ridges, thus forming, in effect a projection of the air passages by means of which all the air present before the opening will be drawnv into the same. Repeated tests on radiators. constructed of separator plates so formed have shown a decided functional advantage over radiators as herein disclosed having the ridges and depressions of the same Width.

Thus it will be readily seen that I have provided a radiator construction of the utmost simplicity, and economy of manufacture. as well as possessing the added advantage of extreme lightness. 'I'he radiator is of the greatest efficiency due to the relatively large contacting surfaces between the plates and tubes, as well as the relatively large air passages wherein every advantage is taken to baille the air and secure the greatest cooling effect.

Obviously some modification may be made in my invention within the skill of the mechanic, and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. In radiator core construction, the combination of a plurality of pairs of separator plates, the plates of each pair being sinuous in edge elevation to provide alternate depressions and ridges, the depressed portions of each of the pair of plates being in contact, a tube confined between the plates, said core being made up of a series of said pairs of plates and confined tubes, the ridge portions of the plates of each pair being in contact with the corresponding portions of the plates of an adjacent pair, said contacting ridge portions of adjacent pairs being grooved to provide for the reception of an intermediate vertical tube, each of said plates having a rib extending vertically and formed along the margin thereof, said Vrib projecting into the open spaces resulting from the formation of the depressions and ridges.

2. In radiator core construction, the combination of a plurality of pairs of separator plates, the plates of each pair being sinuous in edge elevation to provide alternate depressions and ridges, the depressed portions of each of the pair of plates being in contact, a tube confined between the plates, said core being made up of a series of said pairs of plates and confined tubes, the ridge portions of the plates of each pair being in contact with the corresponding portions of the plates of `an adjacent pair, said contacting ridge portions of adjacent pairs being grooved to provide for the reception of an intermediate vertical tube, each of said plates having a rib extending vertically and formed along the margin thereof, said rib projecting into the open spaces resulting from the formation of the depressions and ridges, the grooves resulting from the formation of said ribs being in register in adjacent plates, thereby forming a continuous vertical air passage.

3. In radiator core construction, the combination of a plurality of pairs of separator plates, the plates of each pair being sinuous in edge elevation to provide alternate depressions and ridges, the depressed portions of each of the pair of plates being in contact, a tube confined between the plates, said core being made up of a series of said pairs of plates and confined tubes, the

pressions to facilitate assembly, each of said plates having a rib extending vertically and formed along the margin thereof, said rib projecting into the open spaces resulting from the formation of the depressions and ridges.

HARRY JAFFE.

iso 

